Uses of the wmm the military uses the wmm for undersea and aircraft navigation, parachute deployment, and more. Declination is defined as the angle between magnetic north and the true north. First, just type in your zip code and click on the get location button.
Select a country to find magnetic declination in your city.
Magnetic Declination Map 2020 This Angle Is Properly Called Grid Declination.
Once you do that, the page will refresh, and your longitude and latitude will be filled in automatically. This calculator uses the world magnetic model as released in dec 2019. The declination at london, uk was one degree west (2014), reducing to zero as of early 2020.
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